diff --git a/src/boards/include/boards/sparkfun_thingplus_rp2350.h b/src/boards/include/boards/sparkfun_thingplus_rp2350.h
new file mode 100644
index 000000000..d023f943e
--- /dev/null
+++ b/src/boards/include/boards/sparkfun_thingplus_rp2350.h
@@ -0,0 +1,157 @@
+/*
+ * Copyright (c) 2024 Raspberry Pi (Trading) Ltd.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+// -----------------------------------------------------
+// NOTE: THIS HEADER IS ALSO INCLUDED BY ASSEMBLER SO
+//       SHOULD ONLY CONSIST OF PREPROCESSOR DIRECTIVES
+// -----------------------------------------------------
+// Board definition for the SparkFun RP2350 Thing Plus
+//
+// This header may be included by other board headers as "boards/sparkfun_thingplus_rp2350.h"
+
+// pico_cmake_set PICO_PLATFORM=rp2350
+// pico_cmake_set PICO_CYW43_SUPPORTED = 1
+
+#ifndef _BOARDS_SPARKFUN_THINGPLUS_RP2350_H
+#define _BOARDS_SPARKFUN_THINGPLUS_RP2350_H
+
+// For board detection
+#define SPARKFUN_THINGPLUS_RP2350
+
+// --- RP2350 VARIANT ---
+#define PICO_RP2350A 1
+
+// --- UART ---
+#ifndef PICO_DEFAULT_UART
+#define PICO_DEFAULT_UART 0
+#endif
+#ifndef PICO_DEFAULT_UART_TX_PIN
+#define PICO_DEFAULT_UART_TX_PIN 0
+#endif
+#ifndef PICO_DEFAULT_UART_RX_PIN
+#define PICO_DEFAULT_UART_RX_PIN 1
+#endif
+
+// --- LED ---
+// no PICO_DEFAULT_LED_PIN - LED is on Wireless chip
+#ifndef PICO_DEFAULT_WS2812_PIN
+#define PICO_DEFAULT_WS2812_PIN 14
+#endif
+
+// --- I2C --- Qwiic connector is on these pins
+#ifndef PICO_DEFAULT_I2C
+#define PICO_DEFAULT_I2C 1
+#endif
+#ifndef PICO_DEFAULT_I2C_SDA_PIN
+#define PICO_DEFAULT_I2C_SDA_PIN 6
+#endif
+#ifndef PICO_DEFAULT_I2C_SCL_PIN
+#define PICO_DEFAULT_I2C_SCL_PIN 7
+#endif
+
+// --- SPI ---
+#ifndef PICO_DEFAULT_SPI
+#define PICO_DEFAULT_SPI 0
+#endif
+#ifndef PICO_DEFAULT_SPI_SCK_PIN
+#define PICO_DEFAULT_SPI_SCK_PIN 2
+#endif
+#ifndef PICO_DEFAULT_SPI_TX_PIN
+#define PICO_DEFAULT_SPI_TX_PIN 3
+#endif
+#ifndef PICO_DEFAULT_SPI_RX_PIN
+#define PICO_DEFAULT_SPI_RX_PIN 4
+#endif
+#ifndef PICO_DEFAULT_SPI_CSN_PIN
+#define PICO_DEFAULT_SPI_CSN_PIN 5
+#endif
+
+// --- FLASH ---
+
+#define PICO_BOOT_STAGE2_CHOOSE_W25Q080 1
+
+#ifndef PICO_FLASH_SPI_CLKDIV
+#define PICO_FLASH_SPI_CLKDIV 2
+#endif
+
+// pico_cmake_set_default PICO_FLASH_SIZE_BYTES = (16 * 1024 * 1024)
+#ifndef PICO_FLASH_SIZE_BYTES
+#define PICO_FLASH_SIZE_BYTES (16 * 1024 * 1024)
+#endif
+
+// The thing plus has a SD Card.
+#ifndef PICO_SD_CLK_PIN
+#define PICO_SD_CLK_PIN 2
+#endif
+#ifndef PICO_SD_CMD_PIN
+#define PICO_SD_CMD_PIN 3
+#endif
+#ifndef PICO_SD_DAT0_PIN
+#define PICO_SD_DAT0_PIN 4
+#endif
+#ifndef PICO_SD_DAT3_PIN
+#define PICO_SD_DAT3_PIN 8 // DAT3 of the SD card is the chip select pin
+#endif
+#ifndef PICO_SD_DAT_PIN_COUNT
+#define PICO_SD_DAT_PIN_COUNT 1
+#endif
+
+#ifndef CYW43_WL_GPIO_COUNT
+#define CYW43_WL_GPIO_COUNT 3
+#endif
+
+#ifndef CYW43_WL_GPIO_LED_PIN
+#define CYW43_WL_GPIO_LED_PIN 0
+#endif
+
+// If CYW43_WL_GPIO_VBUS_PIN is defined then a CYW43 GPIO has to be used to read VBUS.
+// This can be passed to cyw43_arch_gpio_get to determine if the device is battery powered.
+// PICO_VBUS_PIN and CYW43_WL_GPIO_VBUS_PIN should not both be defined.
+#ifndef CYW43_WL_GPIO_VBUS_PIN
+#define CYW43_WL_GPIO_VBUS_PIN 2
+#endif
+
+// pico_cmake_set_default PICO_RP2350_A2_SUPPORTED = 1
+#ifndef PICO_RP2350_A2_SUPPORTED
+#define PICO_RP2350_A2_SUPPORTED 1
+#endif
+
+// cyw43 SPI pins can't be changed at runtime
+#ifndef CYW43_PIN_WL_DYNAMIC
+#define CYW43_PIN_WL_DYNAMIC 0
+#endif
+
+// gpio pin to power up the cyw43 chip
+#ifndef CYW43_DEFAULT_PIN_WL_REG_ON
+#define CYW43_DEFAULT_PIN_WL_REG_ON 23u
+#endif
+
+// gpio pin for spi data out to the cyw43 chip
+#ifndef CYW43_DEFAULT_PIN_WL_DATA_OUT
+#define CYW43_DEFAULT_PIN_WL_DATA_OUT 24u
+#endif
+
+// gpio pin for spi data in from the cyw43 chip
+#ifndef CYW43_DEFAULT_PIN_WL_DATA_IN
+#define CYW43_DEFAULT_PIN_WL_DATA_IN 24u
+#endif
+
+// gpio (irq) pin for the irq line from the cyw43 chip
+#ifndef CYW43_DEFAULT_PIN_WL_HOST_WAKE
+#define CYW43_DEFAULT_PIN_WL_HOST_WAKE 24u
+#endif
+
+// gpio pin for the spi clock line to the cyw43 chip
+#ifndef CYW43_DEFAULT_PIN_WL_CLOCK
+#define CYW43_DEFAULT_PIN_WL_CLOCK 29u
+#endif
+
+// gpio pin for the spi chip select to the cyw43 chip
+#ifndef CYW43_DEFAULT_PIN_WL_CS
+#define CYW43_DEFAULT_PIN_WL_CS 25u
+#endif
+
+#endif